Season 01

S01E01 - Genesis - September 25, 2006
S01E02 - Don't Look Back - October 02, 2006
S01E03 - One Giant Leap - October 09, 2006
S01E04 - Collision - October 16, 2006
S01E05 - Hiros - October 23, 2006
S01E06 - Better Halves - October 30, 2006
S01E07 - Nothing to Hide - November 06, 2006
S01E08 - Seven Minutes to Midnight - November 13, 2006
S01E09 - Homecoming - November 20, 2006
S01E10 - Six Months Ago - November 27, 2006
S01E11 - Fallout - December 04, 2006
S01E12 - Godsend - January 22, 2007
S01E13 - The Fix - January 29, 2007
S01E14 - Distractions - February 05, 2007
S01E15 - Run! - February 12, 2007
S01E16 - Unexpected - February 19, 2007
S01E17 - Company Man - February 26, 2007
S01E18 - Parasite - March 05, 2007
S01E19 - .07% - April 23, 2007
S01E20 - Five Years Gone - April 30, 2007
S01E21 - The Hard Part - May 07, 2007
S01E22 - Landslide - May 14, 2007
S01E23 - How to Stop an Exploding Man - May 21, 2007

Season 02

S02E01 - Four Months Later... - September 24, 2007
S02E02 - Lizards - October 01, 2007
S02E03 - Kindred - October 08, 2007
S02E04 - The Kindness of Strangers - October 15, 2007
S02E05 - Fight Or Flight - October 22, 2007
S02E06 - The Line - October 29, 2007
S02E07 - Out of Time - November 05, 2007
S02E08 - Four Months Ago... - November 12, 2007
S02E09 - Cautionary Tales - November 19, 2007
S02E10 - Truth & Consequences - November 26, 2007
S02E11 - Powerless - December 03, 2007

Season 03

S03E01 - The Second Coming - September 22, 2008
S03E02 - The Butterfly Effect - September 22, 2008
S03E03 - One of Us, One of Them - September 29, 2008
S03E04 - I Am Become Death - October 06, 2008
S03E05 - Angels and Monsters - October 13, 2008
S03E06 - Dying of the Light - October 20, 2008
S03E07 - Eris Quod Sum - October 27, 2008
S03E08 - Villains - November 10, 2008
S03E09 - It's Coming - November 17, 2008
S03E10 - The Eclipse, Part 1 - November 24, 2008
S03E11 - The Eclipse, Part 2 - December 01, 2008
S03E12 - Our Father - December 08, 2008
S03E13 - Dual - December 15, 2008
S03E14 - A Clear and Present Danger - February 02, 2009
S03E15 - Trust and Blood - February 09, 2009
S03E16 - Building 26 - February 16, 2009
S03E17 - Cold Wars - February 23, 2009
S03E18 - Exposed - March 02, 2009
S03E19 - Shades of Gray - March 09, 2009
S03E20 - Cold Snap - March 23, 2009
S03E21 - Into Asylum - March 30, 2009
S03E22 - Turn and Face the Strange - April 06, 2009
S03E23 - 1961 - April 13, 2009
S03E24 - I Am Sylar - April 20, 2009
S03E25 - An Invisible Thread - April 27, 2009

Season 04

S04E02 - Jump, Push, Fall - September 21, 2009
S04E01 - Orientation - September 21, 2009
S04E03 - Ink - September 28, 2009
S04E04 - Acceptance - October 05, 2009
S04E05 - Hysterical Blindness - October 12, 2009
S04E06 - Tabula Rasa - October 19, 2009
S04E07 - Strange Attractors - October 26, 2009
S04E08 - Once Upon a Time in Texas - November 02, 2009
S04E09 - Shadowboxing - November 09, 2009
S04E10 - Brother's Keeper - November 16, 2009
S04E11 - Thanksgiving - November 23, 2009
S04E12 - The Fifth Stage - November 30, 2009
S04E13 - Upon This Rock - January 04, 2010
S04E14 - Let It Bleed - January 04, 2010
S04E15 - Close to You - January 11, 2010
S04E16 - Pass/Fail - January 18, 2010
S04E17 - The Art of Deception - January 25, 2010
S04E18 - The Wall - February 01, 2010
S04E19 - Brave New World - February 08, 2010